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For an overview of 5mm ammunition types in the Fallout series of games, see 5mm round.

 
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5mm round is a type of ammunition in Fallout and Fallout 2.

Background

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A high velocity round designed for assault rifles, the intermediate 5mm M134 cartridge[1] has been replaced by the more powerful 5.56mm round in assault rifles.[2] However, it found a new life as linked, belt fed ammunition for man-portable miniguns on the battlefield, specifically the M134 cartridge and is stored in downscaled ammo boxes designed for the 7.62x51mm NATO cartridge in Fallout 4 and Fallout 76.[3] It has also been retained as the ammunition of choice for certain models of assault rifle and paratrooper assault carbines, due to its light weight and portability.[4]

Characteristics

A decent round, though it is outclassed by 12 gauge shells and .223 FMJ rounds, since weapons chambered for these ammunition types come into play at around the same time. Still, it is cheap enough to be useful in certain situations where one needs a burst weapon.

Variants

Narrow, long cartridges of bottleneck-cased rifle ammunition, which are found in large ammo storage cans. Weapons that use this type of ammunition are typically automatic firearms which fire large amounts of ammo. There are two variants of 5mm ammunition:

  • 5mm AP (A brick of small caliber ammunition. 5mm armor piercing.)
  • 5mm JHP (A brick of small, lightweight ammunition. Caliber: 5mm, jacketed hollow-point.)

Weapons using this ammunition

Fallout

Weapon Ammo Performance vs. armor
None Leather jacket Leather armor Metal armor Combat armor Power armor Advanced power armor
Assault rifle 5mm AP/JHP

8 - 16

6.4 - 12.8

4.5 - 10.5

2.8 - 8.4

1.8 - 6.6

-2.4 - 2.4

-3.15 - 0.45

Minigun 5mm AP/JHP

7 - 11

5.6 - 8.8

3.75 - 6.75

2.1 - 4.9

1.2 - 3.6

-3 - -0.6

-3.6 - -1.8

Fallout 2

Weapon Ammo Performance vs. armor
None Leather jacket Leather armor Metal armor Combat armor Power armor Advanced power armor
Assault rifle
Assault rifle (exp. mag.)
5mm JHP

10.4 - 20.8

7.2 - 14.4

5.6 - 12

4.2 - 9.8

2.75 - 6.75

1 - 5

0.1 - 1.7

Assault rifle
Assault rifle (exp. mag.)
5mm AP

5.4 - 10.8

4.6 - 9.2

2.2 - 6.6

0 - 4.2

-0.95 - 2.85

-7.6 - -3.8

-8.8 - -5.6

XL70E3 5mm JHP

15.6 - 24.7

10.8 - 17.1

8.8 - 14.4

7 - 11.9

4.75 - 8.25

3 - 6.5

0.9 - 2.3

XL70E3 5mm AP

8.1 - 12.15

6.9 - 10.35

4.4 - 7.7

2.1 - 5.25

0.95 - 3.8

-5.7 - -2.85

-7.2 - -4.8

Minigun 5mm JHP

9.1 - 14.3

6.3 - 9.9

4.8 - 8

3.5 - 6.3

2.25 - 4.25

0.5 - 2.5

-0.1 - 0.7

Minigun 5mm AP

4.05 - 6.75

3.45 - 5.75

1.1 - 3.3

-1.05 - 1.05

-1.9 - 0

-8.55 - -6.65

-9.6 - -8

Avenger minigun 5mm JHP

13 - 18.2

9 - 12.6

7.2 - 10.4

5.6 - 8.4

3.75 - 5.75

2 - 4

0.5 - 1.3

Avenger minigun 5mm AP

6.75 - 9.45

5.75 - 8.05

3.3 - 5.5

1.05 - 3.15

0 - 1.9

-6.65 - -4.75

-8 - -6.4

Locations

Fallout

Fallout 2

Bugs

In Fallout, ammunition modifiers are not applied properly which makes the 5mm equal to any other kind of ammunition, and both JHP and AP versions functionally identical.

References

  1. Ammunition package in Fallout 3 and Fallout: New Vegas states the following: "5mm LINKED M134
    1 TRACER M17 4 API M8
    FUNC LOT POD80h003L041"
  2. PRO ITEM.MSG: "{2300}{}{Assault Rifle}
    {2301}{}{An AK-112 5mm Assault Rifle. An old military model, out of use around the time of the war. Can fire single-shot or burst, using the high velocity 5mm rounds. Min ST: 5.}"
  3. Ammunition package in Fallout 4 and Fallout 76 states the following: "Cartridges
    "5"MM, Mil
    7.62 x 51 MM ACT
    (A165)
    FUNC
    (ST. A.CL.) 13S455
    "
  4. Weapon appearance.
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